Organic light emitting diode display and method of driving the same

Abstract

An organic light emitting diode display includes: a display module including a data driver for supplying data signals to a panel, a scan driver for supplying scan signals to the panel, and a timing driver for controlling the data driver and the scan driver; and a compensation driver for, upon receipt of a termination signal for terminating the display module, during a termination period in which the display module is terminated, setting a compensation period with reference to the driving time of the display module, and supplying a compensation signal to the panel.

1. An organic light emitting diode display, comprising:
 a display module including a data driver for supplying data signals to a panel, a scan driver for supplying scan signals to the panel, and a timing driver for controlling the data driver and the scan driver; and 
 a compensation driver for, response to a termination signal for terminating the display module, during a termination period in which the display module is terminated, setting a compensation period with based on a driving time of the display module, and supplying a compensation signal to the panel, 
 wherein the compensation driver comprises: 
 a counter for calculating a driving time of the display module; 
 an average value calculator for calculating and storing an average value of data signals supplied to the display module during the driving time; and 
 a level selector for determining a level of a compensation signal to be supplied to the panel with reference to the calculated driving time and the average value of the data signals. 
 
     
     
       2. The organic light emitting diode display of  claim 1 , wherein a level of the compensation signal supplied to the panel is determined with reference to the driving time of the display module and an average value of the data signals supplied to the display module. 
     
     
       3. The organic light emitting diode display of  claim 1 , wherein the counter counts the cycle of a vertical synchronization signal supplied to the display module in order to calculate the driving time of the display module. 
     
     
       4. The organic light emitting diode display of  claim 1 , wherein the compensation signal is supplied to the gate and source/drain of the driving transistors of sub-pixels disposed on the panel. 
     
     
       5. The organic light emitting diode display of  claim 1 , wherein the compensation signal has a level lower than those of the data signals. 
     
     
       6. An organic light emitting diode display, comprising:
 a display module including a data driver for supplying data signals to a panel, a scan driver for supplying scan signals to the panel, and a timing driver for controlling the data driver and the scan driver; and 
 a compensation driver for, response to a termination signal for terminating the display module, during a termination period in which the display module is terminated, setting a compensation period with based on a driving time of the display module, setting an algorithm of a compensation signal, and supplying the compensation signal to the panel, 
 wherein the compensation driver comprises: 
 a counter for calculating a driving time of the display module; 
 an average value calculator for calculating and storing an average value of data signals supplied to the display module during the driving time; 
 a level selector for determining a level of a compensation signal to be supplied to the panel with reference to the calculated driving time and the average value of the data signals; and 
 an algorithm controller for setting an algorithm of the compensation signal with reference to the driving time. 
 
     
     
       7. The organic light emitting diode display of  claim 6 , wherein a level of the compensation signal supplied to the panel is determined with reference to the driving time of the display module and an average value of the data signals supplied to the display module. 
     
     
       8. The organic light emitting diode display of  claim 6 , wherein the counter counts the cycle of a vertical synchronization signal supplied to the display module in order to calculate the driving time of the display module. 
     
     
       9. The organic light emitting diode display of  claim 6 , wherein the compensation signal is supplied to the gate and source/drain of the driving transistors of sub-pixels disposed on the panel. 
     
     
       10. The organic light emitting diode display of  claim 6 , wherein the compensation signal has a level lower than those of the data signals.